2-Port RS422/485 Serial PCI Card
7
DB9-Male Pin Assignment:
RS422 Cable Wiring:
RS485 (2-wire) Cable Wiring:
Power requirements:
5V DC, 450mA (max)
Operating temp.:
0 to 55
°
C (32 to 131
°
F
)
Operating humidity:
5 to 95% RH
8. Environmental Specifications
DB9 (RS422 to USB Cable)
1 TXD-
2 TXD+
3 RXD+
4 RXD-
5 GND
(RS422 Device)
1 TXD-
2 TXD+
3 RXD+
4 RXD-
5 GND
NC = No connection
1 5
6 9
9 Pins Signal
1 TXD- (DATA-)
2 TXD+ (DATA+)
3 RXD+
4 RXD-
5 GND
6 NC
7 NC
8 NC
9 NC
DB9 (485 to USB Cable)
1 DATA-
2 DATA+
3 NC
4 NC
5 GND
(RS485 Device)
1 DATA-
2 DATA+
3 NC
4 NC
5 GND
